Administrator Guide

Policy-based Routing (PBR)

Dell Networking OS supports policy-based routing.

This chapter covers the following topics:

• Overview

• Implementing Policy-based Routing with Dell Networking OS

• Configuration Task List for Policy-based Routing

• Sample Configuration

Topics:

• Overview

• Implementing Policy-based Routing with Dell Networking OS

• Configuration Task List for Policy-based Routing

• Sample Configuration

Overview

Policy-based Routing (PBR) enables you to make routing decisions based on policies applied to a specific

interface. When a router receives a packet it normally decides where to forward it based on the destination

address in the packet, which is used to look up an entry in a routing table. However, in some cases, there may

be a need to forward the packet based on other criteria: size, source, protocol type, destination, etc. For

example, a network administrator might want to forward a packet that uses TCP across a different next-hop

than packets using ICMP.

Rules for PBR can also be a combination of things:

When the packet comes from this source and wants to go to that destination then route it to next-hop or

onto that specific interface. This permits routing over different links or towards different networks even while

the destination is the same but depending on where the packet originates.

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